13-Piece METRIC DEEP CR-MO Impact Socket Set Designed for professional mechanics and serious DIYers, this impact socket set delivers superior strength and wear resistance through its heavy-duty Chrome Molybdenum (CR-MO) construction. The 6-point design maximizes contact with fasteners to reduce rounding under high torque. This set covers a wide spectrum of fractional sizes including 7/16 in., 1/2 in., 9/16 in., 5/8 in., 11/16 in., 3/4 in., 13/16 in., 7/8 in., 15/16 in., 1 in., 1-1/16 in., 1-1/8 in., 1-1/4 in. Finished with a durable black coating for rust protection, these sockets are built for long-lasting performance in demanding work environments.